Type D design bearings are capable of operating at low to moderate temperatures and heavy loads at relatively high speeds.

Compared to other precision angular contact bearings, theD design bearings have the largest number of balls and ball size.

The other contact fits provide relatively high stiffness and maximum load carrying capacity.

718.... D series bearing applications:
    Machine tools: Multi-axis drills (Figure 1)
    Robots
    Printing machines
    Measuring devices

Figure 1

719... .D 70... .D series bearing applications:
Machining centers (Figure 2)
Milling machines
Lathes (Fig. 3)
Cylindrical and surface grinding machines
Boring machines
Machines for cutting or polishing stone and glass
Marine gyrostabilizers
Telescopes
Gas turbine engines
Medical equipment

                              Figure 2

Figure 3                  

 72... D series bearings:
Machine tool spindles, etc., live center (Figure 4)

    Lathes (spindles, tailstock)
    Grinding machines
    Boring machines
    Parallel machine tools (PKM)
    Experimental engine dynamometer
    High-speed turbocharger

          Figure 4